Population Means – Part 3
Published: Mar 7th, 2014
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Content Tagged “Confidence Interval for a Population Mean” 
Population Means – Part 2
Published: Mar 7th, 2014
View Lecture Slides with Transcript – Population Means – Part 2 Video (4:04) This document linked from Population Means – Part 2
Population Means – Part 1
Published: Mar 7th, 2014
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Wrap-Up (Estimation)
Published: Feb 16th, 2013
In this section on estimation, we have discussed the basic process for constructing confidence intervals from point estimates. In doing so we must calculate the margin of error using the […]
Population Means (Summary)
Published: Feb 16th, 2013
Let’s summarize When the population is normal and/or the sample is large, a confidence interval for unknown population mean μ (mu) when σ (sigma) is known is: where z* is […]
Did I Get This – Confidence Intervals: Means #3
Published: Feb 16th, 2013
Here is one final practice for these confidence intervals!! The purpose of this activity is to use statistical software for calculating the sample mean. Software is particularly useful when all […]
Did I Get This – When to Use Z-Interval (Means)
Published: Feb 16th, 2013
Below are four different situations in which a confidence interval for μ (mu) is called for. Situation A: In order to estimate μ (mu), the mean annual salary of high-school teachers in […]
Population Means (Part 3)
Published: Feb 16th, 2013
Sample Size Calculations When is it safe to use these methods? What if σ (sigma) is unknown? CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods […]
Learn by Doing – Sample Size
Published: Feb 16th, 2013
A study was done on pregnant women who smoke during their pregnancies. In particular, the researchers wanted to study the effect that smoking has on the pregnancy length. A sample […]
Population Means (Part 2)
Published: Feb 16th, 2013
Other Levels of Confidence Understanding the General Structure of Confidence Intervals CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods based on these distinctions, and interpret […]